Snuffer



Jan 6, 1931. w. M. BULLARD 1,787,927

NUFFER Filed March 12, 1928 make such mechanical changes and substitutions as may be found desirable and such as may be comprehended within the copeof the fluid flowing through said line to effect theduct fluid in said line into the casebeiieath the valve as well as to direct fluid under pressure against said releasable latch to re lease the same to'permit said valve-to-swing into position to close said passageway.

' '2. The combination: with a tubular casing in awellbore through which gas, under pres suremay escape from said bore,- .afluid pressure line entering thecasing, .a swingable snufler valve movableiinto active position to block said casing and into'inactive position to permit the free'iflow of gas through said casing, areleasab'le latch normally holding said valvein inactive position, and including a member disposed to be actuated by release 'of'said latch whereby the valve is per-; mitted to swingiinto' active position-:-

8. The combination'with a tubular casing in a Wellbore through which gas, under pressure mayescape' from saidbore, a fluid pres sure line 'entering' the casing, asnufler valve movable into'activ'e position to block said casing and into inactive position to permit the free flow of asthrough said casing, re leasable latch means normally'holdingsaidvalve'in inactiveposition, and including a member. disposed" to be actuated by fluid flowing'thr'oug'h-s'aid line to effect the release of said latch, and a spring effective to actuate said valve, when so released, into'the' path of the escaping gas, whereby saidvalve' is moved into said active position.

4. The combinationwith'a-pipe'in awn-- bore through whichfluid under pressure may escape from said bore, a fluid pressure line entering said pipe,;asw1ngable valve movable into active, or closed; position to" close saidpipe to prevent theescape "of said fluid fromthe' wall and movable into inac tive, or opem'positiontopermit the escape of Saidfluid. from the well, latch means'ree leas'able through the action ofthe fluid flow ing through said line and normally-adapted to hold said: valve in inactive, or open, posi tion and said valvejbeing so disposed as to be actuated into closed position by the fluid escaping through said pipe, when said means are: released. '5: k i r 5-..The combinationwith a pipe in a well bore through Whichv fluid-f under pressure may esc'ape from said bore, a fluid pressure line entering saidipipe, afvalve movable into active, or closed position to close saidfpip'e toreventthe escape of said fluid from the well and movable into inactive, or open, position to permit the escape of said-fluid from the well, means releasable through the action of the fluid flowing through said line fluid flowing through said line to release the latch: from said valve:

6. The combination with a pipe in a well bore through which fiuid under pressure may escape from said bore, a fluid pressure a line entering said pipe, a swlngable Valve movableinto active, Orv-closed, position to close said pipe to prevent the escape ofsaid fluid from the Welland movable into the inactive, or open, position to permititheescape of 'said fluid: from the well, means releasable throu'gh'the' actiongof the fluid flowing through said line and adapted to hold said valve in inactive, or open, position, and means for actuatingthe valve, when released, into the'path of said'escaping fluid whereby said fluid will swing the valve into active I position. 7

- 7 Thelcombination with a pipe in a well bore through which fluid, under pressure, may escape from said well, saidpipe having aninside valveseat, of a-snufler valve movable into-active position, against said seat,fto close said and prevent the es cape of said fluid and movable into inact-ive, or open, position, an eye carried by said valve latchmea'ns adapted to engage in the eye and hold said valve in said open position and means for releasing said holding means from said valve, said releasing means comprising an actuator connected to the holding means-and a fluidpressure line entermg' said pipe and disposed to project pressure fluid against said actuator.

'8. The-cornbinationwith a pipe in a well bore through which fluid, under pressure, may" escapefrom the bore, of a swingably mounted valve" in'the pipe adapted to be 

